<template>
    <a-row class="j-select-biz-component-box" type="flex" :gutter="8">
        <a-col class="left" :class="{'full': !buttons}">
            <slot name="left">
                <a-select
                        mode="multiple"
                        :placeholder="placeholder"
                        v-model="selectValue"
                        :options="selectOptions"
                        allowClear
                        :disabled="disabled"
                        :open="selectOpen"
                        style="width: 100%;"
                        @dropdownVisibleChange="handleDropdownVisibleChange"
                        @click.native="visible=(buttons?visible:true)"
                />
            </slot>
        </a-col>

        <a-col v-if="buttons" class="right">
            <a-button type="primary" icon="search" :disabled="disabled" @click="visible=true">{{selectButtonText}}</a-button>
        </a-col>

        <j-select-biz-component-modal
                v-model="selectValue"
                :visible.sync="visible"
                v-bind="modalProps"
                @options="handleOptions"
        />
    </a-row>
</template>

<script>
import JSelectBizComponentModal from './JSelectBizComponentModal'

export default {
  name: 'JSelectBizComponent',
  components: { JSelectBizComponentModal },
  props: {
    value: {
      type: String,
      default: ''
    },
    /** 是否返回 id，默认 false，返回 code */
    returnId: {
      type: Boolean,
      default: false
    },
    placeholder: {
      type: String,
      default: '请选择'
    },
    disabled: {
      type: Boolean,
      default: false
    },
    // 是否支持多选，默认 true
    multiple: {
      type: Boolean,
      default: true
    },
    // 是否显示按钮，默认 true
    buttons: {
      type: Boolean,
      default: true
    },
    // 显示的 Key
    displayKey: {
      type: String,
      default: null
    },
    // 返回的 key
    returnKeys: {
      type: Array,
      default: () => ['id', 'id']
    },
    // 选择按钮文字
    selectButtonText: {
      type: String,
      default: '选择'
    }

  },
  data() {
    return {
      selectValue: [],
      selectOptions: [],
      dataSourceMap: {},
      visible: false,
      selectOpen: false
    }
  },
  computed: {
    valueKey() {
      return this.returnId ? this.returnKeys[0] : this.returnKeys[1]
    },
    modalProps() {
      return Object.assign({
        valueKey: this.valueKey,
        multiple: this.multiple,
        returnKeys: this.returnKeys,
        displayKey: this.displayKey || this.valueKey
      }, this.$attrs)
    }
  },
  watch: {
    value: {
      immediate: true,
      handler(val) {
        if (val) {
          this.selectValue = val.split(',')
        } else {
          this.selectValue = []
        }
      }
    },
    selectValue: {
      deep: true,
      handler(val) {
        let rows = val.map(key => this.dataSourceMap[key])
        this.$emit('select', rows)
        let data = val.join(',')
        this.$emit('input', data)
        this.$emit('change', data)
      }
    }
  },
  methods: {
    handleOptions(options, dataSourceMap) {
      this.selectOptions = options
      this.dataSourceMap = dataSourceMap
    },
    handleDropdownVisibleChange() {
      // 解决antdv自己的bug —— open 设置为 false 了，点击后还是添加了 open 样式，导致点击事件失效
      this.selectOpen = true
      this.$nextTick(() => {
        this.selectOpen = false
      })
    }
  }
}
</script>

<style lang="less" scoped>
    .j-select-biz-component-box {

        @width: 82px;

        .left {
            width: calc(100% - @width - 8px);
        }

        .right {
            width: @width;
        }

        .full {
            width: 100%;
        }

        /deep/ .ant-select-search__field {
            display: none !important;
        }
    }
</style>
